Update webgl_mirror.html

Author: Mugen87

examples/webgl_mirror.html

@@ -102,7 +102,7 @@
 				verticalMirror = new Reflector( geometry, {
 					clipBias: 0.003,
 					textureWidth: size.width,
-					textureHeight: size.heignt,
+					textureHeight: size.height,
 					color: 0xc1cbcb
 				} );
 				verticalMirror.position.y = 50;